韩江北桥主桥结构动力特性分析

文中以韩江北桥主桥五跨连续无风撑斜靠式钢管混凝土系杆拱桥为研究对象,论述了无风撑斜靠式钢管混凝土系杆拱桥结构动力性能分析理论。利用大型通用有限元计算软件ANSYS建立该桥空间三维分析模型,采用子空间法分析结构的动力性能,确定成桥状态下的自振频率与振型。同时利用钢管混凝土结构设计规程及相关设计理论,对该桥的动力特性进行分析。

Analysis of the Dynamic Characteristics of Hanjiang North Bridge

In this paper, Hanjiang North Main Bridge——85m ＋114 m ＋160 m ＋114 m ＋85 m five-span continuous leaning type with no wind bracing system concrete-filled steel tube tied arch bridge for the study, discusses the type of leaning type with no wind bracing system concrete-filled steel tube dynamic performance analysis of arch structure theory. The use of large-scale general-purpose finite element software ANSYS to establish the space of 3-D analysis of the bridge model, the use of sub-space analysis of the dynamic properties of the structure to determine the state bridge natural frequency and vibration mode. At the same time, the use of the structural design of concrete-filled steel tube design theory and related to design theory, the dynamic characteristics of the bridge analysis.